Supplementary data accompanying Hess et al. (2025) 'The I/Ca paleo-oxygenation proxy in planktonic foraminifera: A multispecies core-top calibration' published in Geochimica et Cosmochimica Acta

This data accompanies Hess et al. (2025) 'The I/Ca paleo-oxygenation proxy in planktonic foraminifera: A multispecies core-top calibrations' published in Geochimica et Cosmochimica Acta.

Data columns and explanation:

reference
reference for the I/Ca and Mg/Ca data

site
site name

sample_depth_cm
sample depth (cm below sediment surface)

basin
ocean basin

site_depth_km
site water depth (km)

species
foraminifera species

calcification_depth
foraminifera calcification depth

size_fraction
foraminifera size fraction

cleaning_oxidative_reductive
cleaning applied to sample before trace element analysis (O = oxidative, O+R = oxidative and reductive)

local_O2_variability
indication of whether the site experiences local O2 variability, rows with "yes" are excluded from Figure 4

MgCa
Mg/Ca (mmol/mol)

MgCa_corr
Mg/Ca corrected for effect of reductive cleaning, as necessary (mmol/mol)

T_anand
calcification temperature calculated from Mg/Ca using Anand et al. (2003) multispecies equation

T_Hollstein_multispec
calcification temperature calculated from Mg/Ca using Hollstein et al. (2017) multispecies equation

T_Hollstein_spec
calcification temperature calculated from Mg/Ca using species-specific Hollstein et al. (2017) equations

T_Cleroux
calcification temperature calculated from Mg/Ca using species-specific Cléroux et al. (2008) equations

depth_anand
calcification depth from water column temperature data (Moffett et al., 2020) and T_anand

depth_Hollstein_multispec
calcification depth from water column temperature data (Moffett et al., 2020) and T_Hollstein_multispec

depth_Hollstein_spec
calcification depth from water column temperature data (Moffett et al., 2020) and T_Hollstein_spec

depth_Cleroux
calcification depth from water column temperature data (Moffett et al., 2020) and T_Cleroux

ICa
I/Ca (µmol/mol)

ICa_corr
I/Ca corrected for effect of reductive cleaning, as necessary (µmol/mol)

O2av_0-500m
average oxygen concentration in the top 500 m of the water column at this site, calculated from Moffett et al. (2020) CTD data

O2min_0-500m
minimum oxygen concentration in the top 500 m of the water column at this site, calculated from Moffett et al. (2020) CTD data

O2min_alldepths
minimum oxygen concentration at any depth in the water column at this site, calculated from Moffett et al. (2020) CTD data

O2av_0-100m
average oxygen concentration in the top 100 m of the water column at this site, calculated from Moffett et al. (2020) CTD data

O2min_0-100m
minimum oxygen concentration in the top 100 m of the water column at this site, calculated from Moffett et al. (2020) CTD data